{"product_id":"siemens-eh3a040-circuit-breaker","title":"Siemens | EH3A040 | Circuit Breaker | 3-Pole | 480V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Siemens EH3A040 Circuit Breaker — a precise, reliable solution for 480V three-phase systems. This 3-pole, bolt-on breaker is designed for maintenance, retrofit, and replacement projects where exact compatibility matters, ensuring you keep critical electrical infrastructure protected and ready.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 480V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReference:\u003c\/strong\u003e Part number EH3A040\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re upgrading an aging panel, conducting routine maintenance, or replacing a failed unit, the EH3A040 delivers dependable performance in demanding environments. The bolt-on design provides secure, durable mounting for steady operation in vibration-prone applications, helping minimize service interruptions.\u003c\/p\u003e \u003cp\u003eWhy this Siemens breaker stands out:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact compatibility through the part number EH3A040\u003c\/strong\u003e — reduces guesswork and ensures you’re ordering the right unit for your panel or enclosure.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole configuration\u003c\/strong\u003e supports complete disconnection of all three phases, enhancing safety during maintenance and fault isolation in 480V systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-on installation\u003c\/strong\u003e offers a solid, field-friendly mounting method that’s well-suited to retrofit projects and refurbished equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDesigned for demanding industrial environments\u003c\/strong\u003e and applications where reliable overcurrent protection is essential, from manufacturing lines to large commercial facilities.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis model is ideal for electrical professionals, facilities engineers, and maintenance teams who need a trusted Siemens solution that integrates smoothly with existing 480V, three-phase infrastructure. It’s particularly well-suited for spare-part inventories, retrofit programs, and service-ready replacements where uptime matters.\u003c\/p\u003e \u003cp\u003eImportant note: always confirm fit and ratings before ordering. Cross-check panel catalogs and electrical diagrams to ensure EH3A040 matches your equipment’s specifications and bus-bar configuration. With the right match, this 3-Pole, 480V bolt-on breaker helps you maintain safe, compliant, and efficient power distribution.\u003c\/p\u003e \u003cp\u003eIf you’re assembling parts for a planned retrofit or planning a routine maintenance cycle, the Siemens EH3A040 is a dependable, purpose-built choice that aligns with standard Siemens drafting and compatibility practices—delivering peace of mind when it counts.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427522236578,"sku":"EH3A040","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/siemens-eh3a040-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}